On 6/1/20 3:08 AM, Patrick Bégou wrote: > Le 13/05/2020 à 02:13, Orion Poplawski a écrit : >> On 5/12/20 2:46 AM, Patrick Bégou wrote: >>> Hi, >>> >>> I need some help with NFSv4 setup/tuning. I have a dedicated nfs server >>> (2 x E5-2620 8cores/16 threads each, 64GB RAM, 1x10Gb ethernet and 16x >>> 8TB HDD) used by two servers and a small cluster (400 cores). All the >>> servers are running CentOS 7, the cluster is running CentOS6. >>> >>> Time to time on the server I get: >>> >>> kernel: NFSD: client xxx.xxx.xxx.xxx testing state ID with >>> incorrect client ID >>> >>> And the client xxx.xxx.xxx.xxx freeze whith: >>> >>> kernel: nfs: server xxxxx.legi.grenoble-inp.fr not responding, >>> still trying >>> kernel: nfs: server xxxxx.legi.grenoble-inp.fr OK >>> kernel: nfs: server xxxxx.legi.grenoble-inp.fr not responding, >>> still trying >>> kernel: nfs: server xxxxx.legi.grenoble-inp.fr OK >>> >>> There is a discussion on RedHat7 support about this but only open to >>> subscribers. Other searches with google do not provide useful >>> information. >> >> FYI - you can get access to such info with a free RHEL developers >> account. >> >> > Thanks for your suggestion. As the problem is back I've subscribed to > reach the full content of this discussion. > > The answer was "do not use antivirus" :-(. I do not use antivirus as I > am CentOS only. > > Patrick > Just curious to see if you have had any luck resolving these issues? I'm afraid that NFS on EL 7 has become much less stable for us recently as well with lots more client access hangs. Orion -- Orion Poplawski Manager of NWRA Technical Systems 720-772-5637 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane orion at nwra.com Boulder, CO 80301 https://www.nwra.com/